Greatest Common Factor of 172, 138, 621

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 172, 138, 621 by common division method
• Greatest Common Factor of 172, 138, 621 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 172

List of positive integer factors of 172 that divides 172 without a remainder.

1,2,4,43,86,172

Factors of 138

List of positive integer factors of 138 that divides 138 without a remainder.

1,2,3,6,23,46,69,138

Factors of 621

List of positive integer factors of 621 that divides 621 without a remainder.

1,3,9,23,27,69,207,621

Greatest Common Factor

We found the factors 172,138,621 . The biggest common factor number is the GCF number.
So the greatest common factor 172,138,621 is 1.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 811, 428, 739
• GCF of 853, 326, 621
• GCF of 417, 222, 653
• GCF of 299, 384, 518
• GCF of 942, 790, 266

1. What is the GCF of 172, 138, 621?

Answer: GCF of 172, 138, 621 is 1.

2. How to Find the GCF of 172, 138, 621

Answer: Greatest Common Factor(GCF) of 172, 138, 621 = 1

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(172, 138, 621) = 1.